1.

The nuclear radius of the sodium nuclide {:(23),(11):} Na is half that of the tungsten nuclide""_(74) W. The neutron number of the tungsten nuclide is

Answer»

82
100
110
184

Solution :`{:(A),(74):} W, (R_(NA))/(R_(w))=(1)/(2)=((23)/(A))^(1//3). THEREFORE A=184. therefore N=184-74.`


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